<template>
    <el-main>
    <!-- 新增按钮 -->
    <el-button type="success" icon="el-icon-plus" @click="openAddWindow">新增</el-button>
    <!-- 数据表格 -->
    <el-table
    style="margin-top: 10px"
    :height="tableHeight"
    :data="menuList"
    row-key="id"
    default-expand-all
    :tree-props="{ children: 'children' }"
    :border="true"
    stripe
    >
            <el-table-column prop="label" label="菜单名称"></el-table-column>
            <el-table-column prop="type" label="菜单类型" align="center">
            <template slot-scope="scope">
                <el-tag v-if="scope.row.type == '0'" size="normal">目录</el-tag>
                <el-tag type="success" v-else-if="scope.row.type == '1'" size="normal">菜单</el-tag>
                <el-tag type="warning" v-else-if="scope.row.type == '2'" size="normal">按钮</el-tag>
            </template>
            </el-table-column>
            <el-table-column prop="icon" label="图标" align="center">
                <template slot-scope="scope">
                        <i :class="scope.row.icon" v-if="scope.row.icon.includes('el-icon')" ></i>
                        <svg-icon v-else :icon-class="scope.row.icon"></svg-icon>
                </template>
            </el-table-column>
            <el-table-column prop="name" label="路由名称"></el-table-column>
            <el-table-column prop="path" label="路由地址"></el-table-column>
            <el-table-column prop="url" label="组件路径"></el-table-column>
            <el-table-column align="center" label="操作" width="200">
                <template slot-scope="scope">
                  <el-button
                  icon="el-icon-edit-outline"
                  type="primary"
                  size="small"
                  @click="editMenu(scope.row)"
                  >编辑
                  </el-button>
                  <el-button
                  icon="el-icon-close"
                  type="danger"
                  size="small"
                  @click="deleteMenu(scope.row)"
                  >删除
                  </el-button>
              </template>
            </el-table-column>
    </el-table>


     <!-- 新增或编辑弹框 -->
    <system-dialog
    :title="menuDialog.title"
    :width="menuDialog.width"
    :height="menuDialog.height"
    :visible="menuDialog.visible"
    @onClose="onClose"
    @onConfirm="onConfirm"
    >
    <div slot="content">
    <el-form
    :model="menu"
    ref="menuForm"
    :rules="rules"
    label-width="80px"
    :inline="true"
    size="small"
    >
    <el-row>
    <el-col :span="24">
    <el-form-item prop="type" label="菜单类型">
    <el-radio-group v-model="menu.type">
    <el-radio :label="0">目录</el-radio>
    <el-radio :label="1">菜单</el-radio>
    <el-radio :label="2">按钮</el-radio>
    </el-radio-group>
    </el-form-item>
    </el-col>
    </el-row>
    <el-form-item prop="parentName" size="small" label="所属菜单">
    <el-input
    @click.native="selectParentMenu"
    v-model="menu.parentName"
    :readonly="true"
    ></el-input>
    </el-form-item>
    <el-form-item prop="label" size="small" label="菜单名称">
    <el-input v-model="menu.label"></el-input>
    </el-form-item>
    <el-form-item size="small" label="菜单图标">
        <my-icon @selecticon="setIcon" ref="child"></my-icon>
    </el-form-item>
    <el-form-item
    prop="name"
    v-if="menu.type == 1"
    size="small"
    label="路由名称"
    >
    <el-input v-model="menu.name"></el-input>
    </el-form-item>
    <el-form-item
    prop="path"
    v-if="menu.type != 2"
    size="small"
    label="路由地址"
    >
    <el-input v-model="menu.path"></el-input>
    </el-form-item>
    <el-form-item
    prop="url"
    v-if="menu.type == 1"
    size="small"
    label="组件路径"
    >
    <el-input v-model="menu.url"></el-input>
    </el-form-item>
    <el-form-item prop="code" size="small" label="权限字段">
    <el-input v-model="menu.code"></el-input>
    </el-form-item>
    <el-form-item size="small" label="菜单序号">
    <el-input v-model="menu.orderNum"></el-input>
    </el-form-item>
    </el-form>
    </div>
    </system-dialog>


    <!-- 选择所属菜单弹框 -->
    <system-dialog
        :title="parentDialog.title"
        :width="parentDialog.width"
        :height="parentDialog.height"
        :visible="parentDialog.visible"
        @onClose="onParentClose"
        @onConfirm="onParentConfirm"
        >
        <div slot="content">
            <el-tree
            style="font-size: 14px"
            ref="parentTree"
            :data="parentMenuList"
            node-key="id"
            :props="defaultProps"
            empty-text="暂无数据"
            :show-checkbox="false"
            default-expand-all
            :highlight-current="true"
            :expand-on-click-node="false"
            @node-click="handleNodeClick"
            >
                <div class="customer-tree-node" slot-scope="{ node, data }">
                <!-- 长度为0说明没有下级 -->
                <span v-if="data.children.length == 0">
                <i class="el-icon-document" style="color: #8c8c8c; font-size: 18px"/>
                </span>
                <span v-else @click.stop="openBtn(data)">
                <svg-icon v-if="data.open" icon-class="add-s"/>
                <svg-icon v-else icon-class="sub-s"/>
                </span>
                <span style="margin-left: 3px">{{ node.label }}</span>
                </div>
            </el-tree>
        </div>
    </system-dialog>


</el-main>
</template> 

<script>
   //导入menu.js脚本代码
    import menuApi from '@/api/system/menu';
    //导入对话框组件
    import SystemDialog from '@/components/system/Systemdialog'

    //导入自定义的icon图标库
    import { elementIcons } from "@/utils/icons";

    //导入自定义图标组件
    import MyIcon from '@/components/system/MyIcon.vue'


    export default {
        name: "menuList",
        //注册组件
        components:{
            SystemDialog ,
            MyIcon
        },
        data() {
        return {
        menuList: [], //菜单列表
        tableHeight: 0, //表格高度

        //新增或编辑弹框属性
        menuDialog: {
            title: "",
            width: 630,
            height: 270,
            visible: false,
        },
        //菜单属性
        menu: {
            id: "",
            type: "",
            parentId: "",
            parentName: "",
            label: "",
            icon: "",
            name: "",
            path: "",
            url: "",
            code: "",
            orderNum: "",
        },
        rules: {
            type: [{ required: true, trigger: "change", message: "请选择菜单类型" }],
            parentName: [{ required: true, trigger: "change", message: "请选择所属菜单"}],
            label: [{ required: true, trigger: "blur", message: "请输入菜单名称" }],
            name: [{ required: true, trigger: "blur", message: "请输入路由名称" }],
            path: [{ required: true, trigger: "blur", message: "请输入路由路径" }],
            url: [{ required: true, trigger: "blur", message: "请输入组件路径" }],
            code: [{ required: true, trigger: "blur", message: "请输入权限字段" }],
        },
        //上级菜单弹框属性
        parentDialog: {
            title: '选择所属菜单',
            width: 280,
            height: 450,
            visible: false
        },
        //树属性定义
        defaultProps: {
            children: 'children',
            label: 'label'
        },
        //所属菜单列表
        parentMenuList: [],
        iconList: [],//图标列表
        userChooseIcon: "",//用户选中的图标
      }
    },
    methods: {
        /**
        * 查询菜单列表
        */
        async search() {
            //发送查询请求
            let res = await menuApi.getMenuList();
            //判断是否成功
            if(res.success){
                //赋值
                this.menuList = res.data;
            }
        },
        /**
        * 打开添加窗口
        */
        openAddWindow() {
            this.$resetForm('menuForm', this.menu) //清空表单数据
            this.menuDialog.title = '新增菜单' //设置窗口标题
            this.menuDialog.visible = true //显示窗口
            this.$nextTick(() => {
                    this.$refs["child"].userChooseIcon = "";//清空菜单图标
            })

        },
        /**
        * 获取图标列表
        */
        getIconList(){
            this.iconList = elementIcons;
        },
        //给icon绑定的点击事件
        setIcon(icon) {
            this.userChooseIcon = icon; //将i的样式设为选中的样式el-icon-xxx
            this.menu.icon = icon;
        },
        /**
        * 添加和修改菜单窗口关闭事件
        */
        onClose() {
            this.menuDialog.visible = false; //关闭窗口
        },
        /**
        * 添加和修改菜单窗口确认事件
        */
        onConfirm() {
            //表单验证
            this.$refs.menuForm.validate(async (valid) => {
            if (valid) {
                    let res = null;
                    //判断菜单ID是否为空
                    if (this.menu.id === "") {
                        //发送添加请求
                        res = await menuApi.addMenu(this.menu);
                    } else {
                        //发送修改请求
                        res = await menuApi.updateMenu(this.menu);
                    }
                    //判断是否成功
                    if (res.success) {
                        this.$message.success(res.message);
                        //刷新
                        this.search();
                        //关闭窗口
                        this.menuDialog.visible = false;
                    } else {
                        this.$message.error(res.message);
                    }
                }
            })

        },
        /**
        * 选择所属菜单
        */
        async selectParentMenu() {

            //显示窗口
            this.parentDialog.visible = true;
            //发送查询请求
            let res = await menuApi.getParentMenuList();
            //判断是否成功
            if (res.success) {
            //赋值
            this.parentMenuList = res.data;

            }
        },

        /**
        * 选择所属菜单取消事件
        */
        onParentClose() {
            this.parentDialog.visible = false //关闭窗口
        },
        /**
        * 选择所属菜单确认事件
        */
        onParentConfirm() {
            this.parentDialog.visible = false //关闭窗口
        },
        /**
        * 切换图标
        * @param data
        */
        openBtn(data) {
            data.open = !data.open
            this.$refs.parentTree.store.nodesMap[data.id].expanded = !data.open
        },
        /**
        * 所属菜单节点点击事件
        */
        handleNodeClick(data) {
            //所属父级菜单ID
            this.menu.parentId = data.id;
            //所属父级菜单名称
            this.menu.parentName = data.label;
        },


        /**
        * 编辑菜单
        * @param row
        */
        editMenu(row){
           //把当前要编辑的数据复制到数据域，给表单回显
            this.$objCopy(row, this.menu);
            //设置弹框属性
            this.menuDialog.title = "编辑菜单";
            this.menuDialog.visible = true;
            this.$nextTick(() => {
            this.$refs["child"].userChooseIcon = row.icon;//菜单图标回显
            })
        },
        /**
        * 删除菜单
        * @param row
        */
       async deleteMenu(row){
            //判断是否存在子菜单
            let result = await menuApi.checkPermission({ id: row.id });
            //判断是否可以删除
            if (!result.success) {
                //提示不能删除
                this.$message.warning(result.message);
            } else {
            //确认是否删除
            let confirm =await this.$sconfirm("确定要删除该数据吗?");
            if (confirm) {
                //发送删除请求
                let res = await menuApi.deleteById({ id: row.id });
                //判断是否成功
                if (res.success) {
                //成功提示
                this.$message.success(res.message);
                //刷新
                this.search();
            } else {
                //失败提示
                this.$message.error(res.message);
            }
            }
            }
        },
    },
    //初始化时调用
    created(){
        //调用查询菜单列表的方法
        this.search()
        //调用获取图标列表
        this.getIconList();

    },
    mounted() {
        this.$nextTick(() => {
        this.tableHeight = window.innerHeight - 180
        })
    }
}
</script>